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Immobilization of Catalysts Derived from Cinchona Alkaloids on Modified Poly(ethylene glycol).

โœ Scribed by Tamara Danelli; Rita Annunziata; Maurizio Benaglia; Mauro Cinquini; Franco Cozzi; Graziella Tocco


Publisher
John Wiley and Sons
Year
2003
Weight
139 KB
Volume
34
Category
Article
ISSN
0931-7597

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๐Ÿ“œ SIMILAR VOLUMES


Immobilization of catalysts derived from
โœ Tamara Danelli; Rita Annunziata; Maurizio Benaglia; Mauro Cinquini; Franco Cozzi ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 206 KB

The straightforward immobilization of some derivatives of Cinchona alkaloids on modified poly(ethylene glycol)s is reported. The compounds, obtained by simple reactions exploiting different sites for the attachment of the alkaloids to the polymer, were tested as catalysts in the enantioselective ben

Poly(ethylene glycol) supported cinchona
โœ Baptiste Thierry; Jean-Christophe Plaquevent; Dominique Cahard ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 193 KB

We have demonstrated that quaternary ammonium salts of cinchona alkaloids grafted to a poly(ethylene glycol) matrix are efficient homogeneous catalysts in the enantioselective alkylation of glycine Schiff base derivatives. The role of the solvent, the molecular weight of the polymer and the anchorag

Combinatorial synthesis of novel thioure
โœ Gui-Chun Yang; Zu-Xing Chen; Zhao-Jun Zhang ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 220 KB

A modified poly(ethylene glycol) (PEG) has been developed for the soluble polymer-supported combinatorial synthesis of novel thiourea derivatives. Dihydroxy-PEG with an average MW of 4000 was used as soluble polymer supports, a benzoyl residue as spacer, and 4-oxybenzoyl chloride group as the moiety